Four camps, see the SD-WAN puzzle!

Wang Hao Dahe Yunlian (DAHO) Partner/Chief Business Architect, worked for China Telecom Beijing Research Institute and Group Corporation for more than ten years, promoter and writer of ITU-T Y.2300 series standards. As the first batch of IP talents of China Telecom, it has accumulated in the fields of IP backbone network, metropolitan area network planning, SDN/NFV new technology research and development.
In 2016, the word SD-WAN suddenly became a fire in China. The application scenarios of SDN must mention SD-WAN. Companies related to enterprise services have linked their products to SD-WAN solutions and services. The market analysis report of SD-WAN was also launched separately with consulting organizations Gartner and IDC, which really attracted enough attention to the estimated $6 billion global service market in 2020. However, what network categories are included in SD-WAN, which SDN solutions are represented, and how to look at SD-WAN from a global perspective are all worthy of discussion.
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